If we talk about the algorithms of Google's. It is a complex system used to retrieve data from its search index and instantly deliver the best possible results for a query.

And the google search engine uses a combination of algorithms and numerous ranking signals to deliver webpages ranked by relevance on its search engine results pages (SERPs).

Into the early times, Google only made a handful of updates to its algorithms. At this time, Google makes thousands of changes every year.

All Most of these updates are so slight that they go completely unnoticed. Yet, on these occasion, the search engine rolls out major algorithmic updates that significantly impact the SERPs such as:

• Fred
• Intrusive Interstitials Update
• Mobilegeddon
• RankBrain
• Panda
• Penguin
• Hummingbird
• Pigeon
• Payday
• EMD (Exact Match Domain)
• Page Layout Algorithm